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Finding the Fourth Proportional to 156,600.68, 216,108.94 and 84,980.70

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Solution

The fourth proportional to 156,600.68, 216,108.94 and 84,980.70 is: 117,273.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,600.68 : 216,108.94 = 84,980.70 : x
  2. Step 2: Convert to fraction form
    156,600.68/216,108.94 = 84,980.70/x
  3. Step 3: Cross multiply
    156,600.68x = 216,108.94 × 84,980.70
  4. Step 4: Simplify right side
    156,600.68x = 18,365,089,914.09
  5. Step 5: Solve for x
    x = 18,365,089,914.09/156,600.68
  6. Step 6: Final answer
    x = 117,273.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.